CVE-2024-54819
📋 TL;DR
CVE-2024-54819 is a Server-Side Request Forgery (SSRF) vulnerability in I, Librarian versions up to 5.11.1 that allows attackers to make the server send unauthorized requests to internal or external systems. This affects all users running vulnerable versions of the I, Librarian software, potentially exposing internal network resources or enabling further attacks.
💻 Affected Systems
- I, Librarian
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access internal services, exfiltrate sensitive data, perform port scanning of internal networks, or chain with other vulnerabilities to achieve remote code execution.
Likely Case
Information disclosure from internal services, access to cloud metadata services (like AWS IMDS), or scanning of internal network segments.
If Mitigated
Limited impact if network segmentation restricts outbound connections and internal services require authentication.
🎯 Exploit Status
The vulnerability is in input validation logic, making exploitation straightforward. Public proof-of-concept exists in the referenced GitHub commit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 5.11.1
Vendor Advisory: https://github.com/mkucej/i-librarian-free/commit/ed36f6f258392fa2ec72f9820661ded75d91accc
Restart Required: No
Instructions:
1. Update to the latest version of I, Librarian. 2. Apply the patch from the GitHub commit that fixes validation.php. 3. Verify the fix by testing SSRF attempts.
🔧 Temporary Workarounds
Network Restriction
linuxRestrict outbound network connections from the I, Librarian server using firewall rules.
iptables -A OUTPUT -p tcp --dport 80 -j DROP
iptables -A OUTPUT -p tcp --dport 443 -j DROP
Input Validation Enhancement
allAdd additional input validation to reject URLs pointing to internal IP ranges.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the I, Librarian server from sensitive internal systems.
- Deploy a web application firewall (WAF) with SSRF protection rules.
🔍 How to Verify
Check if Vulnerable:
Check if the validation.php file contains the vulnerable code pattern from the GitHub commit reference.Check Version:
Check the version in the I, Librarian admin interface or configuration files.Verify Fix Applied:
Verify that the validation.php file has been updated with proper URL validation and test SSRF attempts return errors.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from the server
- Requests to internal IP addresses or metadata services
Network Indicators:
- HTTP traffic from I, Librarian server to unexpected destinations
- Port scanning patterns from the server
SIEM Query:
source="i-librarian-logs" AND (url CONTAINS "169.254.169.254" OR url CONTAINS "localhost" OR url CONTAINS "127.0.0.1")